Can this run off of 2nd hand power? for example, usb on a keyboard or a monitor?
23718
Although my purchase was for a gift, it certainly worked and he was very happy with it. So I'd say yes.
23719
yes , but i dislike the product. it is just heavy enough to possibly cause harm ( I think ) to your usp .
23720
yes it can but after two weeks the leds started flashing like a small strobe light I threw it out I might had just had a bad one I don't want to condem the others they may be fine but the answer is yes it runs off my usb 2 port on a logitetec keyboard I hope this helps
23721
I believe that each USB port has 5V, 200mA source on a laptop; 500 mA on desktop. So you can plug two lights into two USB ports at the same time... Good luck. Have a good day...
23722
I don't know for sure, but I would think so. My keyboard and monitor are so old they don't have the usb ports on them. but it ran off my battery back up, wall plug and car plug.
23723
It should work with any USB connection. I have used it on my synthesizer with its USB port and it worked fine. It just wasn't bright enough.
955240
My guess would be yes because it has needs a power supply which it gets from it's own plug in. Also, it remains lit up when the computer is off. That being said, I have not tried what you ask.
907288
Hi. With this device, you do not need any external power. The device brings it all included and takes what it needs directly from their computer. It works excellently. Regards. Vincent.
2149585
No. The unit is powered from a permanently sealed battery with 10 year life and cannot use external power, so there would be no point in doing so.
1630042
as far as I know, that is impossible. Depending on your case, you might have a main power switch on the back that completely cuts all power, you could use that, but otherwise, I know of no way to do so
411227
Probably, since it plugs into the usb port of your computer and nothing else (no external power supply needed)
2087378
Mine worked with power from HDMI port. I don't believe external power is required.
2082984
As long as you plug it into the wall with the adapter, there shouldn't be any problem. I run 3 off of mine, as well as a keyboard, mouse, ex.
1580655
I guess it depends how long you need it to run in the event of a power failure. If this is your only computer and only need a very short up time before shutting down it may be over kill for you.
819440
Yes you can run 2 keyboards, mice and other items without it switching those...it will only switch what you hook up.
1468109
It can be powered used via usb. But I wouldn't recommend it because it's possible you could burn out the internal battery
685899
The device uses an external power supply. If you have needs other than 110V, you'll have to supply you own.
92191
This unit is powered by the USB connector on your computer. No external power supply.
329659
I would not be concerned as much about the system resources used as much as the power drawn. They pull ~500 mA each which can be a concern if your laptop has other usb devices plugged in as well. In my experience my old macbook couldn't handle the power consumption. I would suggest using a powered usb hub if you want to run from your laptop.
925702
There is a miniUSB to dual USB cord that comes with it, which uses the power from the PC. It's a little longer than I'd like it to be, so I suppose you can substitute a shorter one. Not sure what the dual USB end would be for...
948435
No problem dude! Its powerd by the USB port! You dont have to plug it on the wall
207052
yea you can it just has different labels for computer. Be sure to have green feature switch off. if its on it will not allow you to turn on certain devices unless tv is on. but if you have a fancy powerful system with several devices and are being used constantly and demand high watt usage then i would not recommend to use.